| Hillsborough to Devnya | 4,897.52 mi (7,881.80 km) |
| Hillsborough to Dimitrovgrad | 4,867.91 mi (7,834.15 km) |
| Hillsborough to Dobrich | 4,893.10 mi (7,874.69 km) |
| Hillsborough to Dospat | 4,825.79 mi (7,766.36 km) |
| Hillsborough to Dupnitsa | 4,757.23 mi (7,656.01 km) |
| Hillsborough to Elhovo | 4,902.20 mi (7,889.33 km) |
| Hillsborough to Etropole | 4,770.18 mi (7,676.87 km) |
| Hillsborough to Gabrovo | 4,822.93 mi (7,761.75 km) |
| Hillsborough to Gorna Oryahovitsa | 4,826.58 mi (7,767.64 km) |
| Hillsborough to Gotse Delchev | 4,811.29 mi (7,743.03 km) |
| Hillsborough to Harmanli | 4,885.04 mi (7,861.71 km) |
| Hillsborough to Haskovo | 4,871.46 mi (7,839.85 km) |
| Hillsborough to Ihtiman | 4,778.91 mi (7,690.91 km) |
| Hillsborough to Isperih | 4,847.28 mi (7,800.94 km) |
| Hillsborough to Kardzhali | 4,875.18 mi (7,845.85 km) |
